Not that these renderings are the end-all but I can see some very real aims as possibilities:
1. yes, it shows the roof over the flexible space as being pliable and able to be open or closed based on needs.
2. the event centre building seems like it is going to be a substantial piece of architecture (I wonder who is going to be tagged for this design effort).
3. the event centre building is going to be connected to the ICE annex building by a pedway. I wish the City would consider pedways as more than an A-to-B connector and allow for more width so that there could be other uses -- all manner of amenity kiosks, pop-up businesses, demonstration platforms and busker stations (having more businesses in expanded pedways would actually work to make them safer as a path of travel)
4. on the subject of pedways I hope the City in conjunction with Qualico will consider an expanded ^ pedway connection to the event centre from Qualico's mini-city development across 101st Street.
5. I hope that the flexible space portion of the development along 101st Street makes allowances for retail businesses and eateries/pubs that could then face 101 as well as inward to flex-space.
6. I also hope that portions of this space along 101and 104th Ave. could house public restrooms in lieu of port-a-potties (which have a tendency to become disgustingly gross in a short run of use).
7. As I had surmised the mid-rise across from the MacDonald Building shows two levels of Hospitality/Retail in the rendering (3rd rendering down from the top) -- is that not an ideal location for an A-listed restaurant?
8. While showing the entire Macdonald Building as residential, a little more imagination could have large portions of the ground floor removed so that there is a two-storey space including the "basement". This could then become a noted live-music nightclub space with art studios (rather than residences) on the floors above. Conjoined with a major restaurant across the street this corner could then become one of Edmonton's premier downtown go-to-spots.
9. the bottom rendering shows a "meh" park space -- in lieu, this could also become a major attraction space with better park functions.
10. since these are major interest spots in the rendering I still believe they will be the first to get developed along with the 42-storey tower adjacent to the ICE district plaza -- so a 42 storey tower, plus a 20+ storey tower adjacent to the ICE district annex, plus a mid rise as shown in rendering 3 plus the renovated MacDonald Building. I don't believe there will be subsurface parking for the event centre build-outs; that will come when the rest of Phase II is developed (I have a half-dozen good reasons for believing this).
What a boon for Edmonton!